My family was driving down the road at about 1:00 am and as soon as we were passing over a bridge, we saw three aircraft hovering in the air above our car. As they passed over out car, our car suddenly died and wouldn't activate until the crafts were out of visual contact. As these craft glidded acros teh air above us, they seemed to be flying in a triangular formation. Each appeared to be the size of a full moon. After about 3 seconds after we spotted them, they quickly ascended until they seemed to be the size of a metal nut. This occured in only 1/2 a second. after this, there was a bright flash around the area where they were in teh sky and they disappeared.